Disabled Windows Shortcut Keys
Regardless of the operating mode you are working in, the following Windows shortcut keys are disabled:
Key  | Description  | 
ALT+F4  | Closes the active item or quits the active program.  | 
ALT+SPACEBAR  | Opens the shortcut menu for the active window that contains, among other commands, Minimize and Close.  | 
Windows key+M  | Minimizes all the windows.  | 
If you are working in closed mode, the following Windows shortcut keys are also disabled:
- CTRL+SHIFT+ESC
 - Windows key+Pause/Break
 - Windows key+R
 - Windows key+L
 - Windows key+F
 - Windows key+CTRL+F
 - Windows key+D
 - Windows key+U
 - Windows key+F1
 - Windows key+E
 - SHIFT+DEL
 - ALT+TAB
 - ALT+ENTER
 

Even though the CTRL+ALT+DEL shortcut key is enabled, the system disables all the buttons in the Windows Security window except Cancel.
